Connected: An Internet Encyclopedia
RFC 1772 - Appendix A. The Interaction of BGP and an IGP

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### Appendix A. The Interaction of BGP and an IGP

This section outlines methods by which BGP can exchange routing information with an IGP. The methods outlined here are not proposed as part of the standard BGP usage at this time. These methods are outlined for information purposes only. Implementors may want to consider these methods when importing IGP information.

This is general information that applies to any generic IGP.

Interaction between BGP and any specific IGP is outside the scope of this section. Methods for specific IGP's should be proposed in separate documents. Methods for specific IGP's could be proposed for standard usage in the future.

A.1 Overview
A.2 Methods for Achieving Stable Interactions

A.2.1 Propagation of BGP Information via the IGP
A.2.2 Tagged Interior Gateway Protocol
A.2.3 Encapsulation
A.2.4 Pervasive BGP
A.2.5 Other Cases

Next: A.1 Overview

Connected: An Internet Encyclopedia
RFC 1772 - Appendix A. The Interaction of BGP and an IGP